J. Anim Sci.
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J. Anim Sci. 1948. 7:16-25.
© 1948 American Society of Animal Science
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A Study of Cobalt Deficiency in New Hampshire with Sheep1

H. A. Keener, G. P. Percival and K. S. Morrow2

New Hampshire Agricultural Experiment Station

Abstract

A paired experiment was carried out with lambs in an attempt to substantiate field studies which indicated a widespread cobalt deficiency in New Hampshire. Although, with very few exceptions, only borderline deficiency cases were encountered, the average gain in weight of the animals receiving cobalt was approximately two and a half times that of the controls.Differences in gain in weight appeared to be due to differences in feed consumption.Although blood counts were not found to be reliable for detecting borderline cases of this deficiency, analysis of blood serum and certain tissues for cobalt did appear to have potential value for this purpose.

It is concluded that cobalt deficiency can result from feeding low cobalt hay such as found in New Hampshire and that the effects of even a border-line deficiency are of considerable importance.

Footnotes

1 Scientific Contribution No. 111 of the New Hampshire Agricultural Experiment Station, Durham.

2 The authors gratefully acknowledge the advice and assistance of Mr. Kenneth C. Beeson and Dr. Gordon H. Ellis of the U. S. Plant, Soil and Nutrition Laboratory, Ithaca, N. Y., in carrying out this experiment. Mr. Beeson carried out the cobalt analyses on hay and grain, while Dr. Ellis carried out the cobalt analyses on blood and tissues. The careful supervision of the experimental animals by Mr. A. D. Littlehale of the staff of this station is also acknowledged.






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Copyright © 1948 by the American Society of Animal Science.